Drilling plans shift after unknown noise detected

[helderheid]

HUNTINGTON, Utah (CNN) -- Rescuers at Crandall Canyon mine decided to drill a fourth hole at a different location than planned on Thursday after underground listening devices registered an unknown noise.

But officials overseeing the rescue of six miners trapped for 10 days in the central Utah coal mine say it's not possible to know for certain whether the information detected by the devices might be significant.

"We saw some indication of noise for a period of about five minutes that we had not seen before," Richard Stickler, director of the U.S. Mine Safety and Health Administration said Wednesday. "We're not sure what it means."

"Don't read too much into this noise we picked up," said Bob Murray, president and CEO of mine co-owner Murray Energy Group. "But it is a sign of hope."

Video Watch Murray explain what sounds could mean »
http://www.cnn.com/2007/US/08/16/utah.mine/index.html?eref=rss_topstories#cnnSTCVideo

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